CN112374839A - Concrete block with good waterproof and heat insulation effects - Google Patents
Concrete block with good waterproof and heat insulation effects Download PDFInfo
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- CN112374839A CN112374839A CN202011525331.9A CN202011525331A CN112374839A CN 112374839 A CN112374839 A CN 112374839A CN 202011525331 A CN202011525331 A CN 202011525331A CN 112374839 A CN112374839 A CN 112374839A
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- concrete block
- heat insulation
- good waterproof
- insulation effects
- waterproof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/76—Use at unusual temperatures, e.g. sub-zero
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a concrete block with good waterproof and heat insulation effects, which comprises the following components in percentage by weight: 18-25% of silicon mullite red brick reclaimed material, 20-28% of cement, 3-5% of anti-freezing and waterproofing agent, 12-18% of semi-hydrated phosphogypsum, 0.1-0.3% of gas former, 1.5-3.2% of polyester needled felt, 0.1-0.2% of naphthalene water reducer and the balance of fly ash. The concrete block is added with a small amount of anti-freezing waterproof agent consisting of glycol, styrene-acrylic emulsion and redispersible latex powder, and the styrene-acrylic emulsion and the redispersible latex powder in the anti-freezing waterproof agent and the portland cement can form a gel system with good waterproof effect under the foaming effect; the polyester needled felt is added, so that the ethylene glycol can be dispersed more uniformly, and the anti-freezing effect is obviously improved. The concrete block prepared by the invention has excellent waterproof and anti-permeability performance and good anti-freezing effect.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a concrete block with good waterproof and heat insulation effects.
Background
The aerated concrete block has the characteristics of wide material source, stable material quality, light weight, easy processing, convenient construction, low manufacturing cost, heat preservation, heat insulation, sound insulation and the like. However, because the building block material has high water absorption rate, watering and maintenance are needed after the building is finished, the water content of the building block wall is increased, and the building block wall is easy to generate dry shrinkage cracks.
The winter in northeast China is very cold, and if the waterproof effect of the building block is not good, the building block is filled with water, and in cold winter, water can form ice crystals inside the building block, so that the strength of the building block is influenced, and the heat insulation effect and the service life of the building block are further influenced.
The Chinese invention patent CN106045434 discloses a straw steel slag powder reclaimed material autoclaved aerated concrete block, which has a brand new modification formula, and the finished block has low density, extremely low drying shrinkage value and strong frost resistance; but the building block does not relate to waterproof performance, and in order to expand the application range of the concrete building block, the invention provides the concrete building block with good waterproof and heat insulation effects.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a concrete block with good waterproof and heat insulation effects.
The technical scheme of the invention is as follows:
a concrete block with good waterproof and heat insulation effects comprises the following components: the composite material comprises a silicon mullite red brick reclaimed material, cement, an anti-freezing waterproof agent, semi-hydrated phosphogypsum, a gas former, a polyester needled felt, a naphthalene water reducer and fly ash.
Preferably, the concrete block with good waterproof and heat insulation effects comprises the following components in percentage by weight: 18-25% of silicon mullite red brick reclaimed material, 20-28% of cement, 3-5% of anti-freezing and waterproofing agent, 12-18% of semi-hydrated phosphogypsum, 0.1-0.3% of gas former, 1.5-3.2% of polyester needled felt, 0.1-0.2% of naphthalene water reducer and the balance of fly ash.
Preferably, the particle size of the silicon mullite red brick reclaimed material is 200 meshes.
Preferably, in the recycled silicon mullite brick material, the weight ratio of alumina is not less than 30%.
Preferably, in the concrete block, the cement is 42.5 portland cement.
Preferably, the anti-freezing waterproof agent consists of glycol, styrene-acrylic emulsion and redispersible latex powder.
Further preferably, in the anti-freezing waterproof agent, the mass ratio of the glycol to the styrene-acrylic emulsion to the redispersible latex powder is 100: (8-12): (30-40).
Preferably, the gas former is sodium a-alkenyl sulfonate.
Preferably, the thickness of the polyester needle felt is 0.8-1.2 mm.
The preparation method of the concrete block with good waterproof and heat insulation effects comprises the following steps:
(1) adding raw materials except for the gas former of the concrete block into a stirrer, adding water and stirring to obtain slurry with certain consistency;
(2) heating the prepared slurry to 60-80 ℃, adding a gas former, and stirring at a high speed;
(3) rapidly pouring the uniformly stirred slurry into a mold, and putting the mold into a steam curing box at the temperature of 60-65 ℃ for precuring for 60-90min after the slurry in the mold is fully aerated;
(4) cutting the blank after pre-curing;
(5) after the die is removed, the cut blank is sent to a still kettle for steam curing according to a specified steam curing system, and the steam curing conditions are as follows: 150 ℃ and 170 ℃, 3-4MPa and 3-4 h;
(6) and (4) after the autoclave curing is finished, taking the masonry out of the kettle, and aging for 3-4d under natural conditions.
The invention has the advantages that: the concrete block with good waterproof and heat insulation effects comprises the following components in percentage by weight: 18-25% of silicon mullite red brick reclaimed material, 20-28% of cement, 3-5% of anti-freezing and waterproofing agent, 12-18% of semi-hydrated phosphogypsum, 0.1-0.3% of gas former, 1.5-3.2% of polyester needled felt, 0.1-0.2% of naphthalene water reducer and the balance of fly ash. The concrete block is added with a small amount of anti-freezing waterproof agent consisting of glycol, styrene-acrylic emulsion and redispersible latex powder, and the styrene-acrylic emulsion and the redispersible latex powder in the anti-freezing waterproof agent and the portland cement can form a gel system with good waterproof effect under the foaming effect; the polyester needled felt is added, so that the ethylene glycol can be dispersed more uniformly, and the anti-freezing effect is obviously improved. The concrete block prepared by the invention has excellent waterproof and anti-permeability performance and good anti-freezing effect.
Detailed Description
Example 1
A concrete block with good waterproof and heat insulation effects comprises the following components in percentage by weight: 22% of silicon mullite red brick recycled material, 25% of cement, 4% of anti-freezing and waterproofing agent, 15% of semi-hydrated phosphogypsum, 0.25% of gas former, 2.4% of polyester needled felt, 0.5% of naphthalene water reducing agent and the balance of fly ash.
The particle size of the recycled silicon mullite red brick material is 200 meshes.
In the recycled silicon mullite brick material, the weight ratio of alumina is not less than 30%.
In the concrete building block, the cement is 42.5 Portland cement.
The anti-freezing waterproof agent consists of glycol, styrene-acrylic emulsion and redispersible latex powder; the mass ratio of the ethylene glycol to the styrene-acrylic emulsion to the redispersible emulsion powder is 100: 9: 35.
the gas former is a-sodium alkenyl sulfonate.
The thickness of the polyester needle felt is 1.1 mm.
The preparation method of the concrete block with good waterproof and heat insulation effects comprises the following steps:
(1) adding raw materials except for the gas former of the concrete block into a stirrer, adding water and stirring to obtain slurry with certain consistency;
(2) heating the prepared slurry to 75 ℃, adding a gas former, and stirring at a high speed;
(3) rapidly pouring the uniformly stirred slurry into a mold, and putting the mold into a steam curing box at 62 ℃ for 80min for precuring after the slurry in the mold is fully aerated;
(4) cutting the blank after pre-curing;
(5) after the die is removed, the cut blank is sent to a still kettle for steam curing according to a specified steam curing system, and the steam curing conditions are as follows: 165 ℃, 3.5MPa and 3.5 h;
(6) and (4) after the autoclave curing is finished, taking the masonry out of the kettle, and aging for 4d under natural conditions.
Example 2
A concrete block with good waterproof and heat insulation effects comprises the following components in percentage by weight: 25% of silicon mullite red brick recycled material, 20% of cement, 5% of anti-freezing and waterproofing agent, 12% of semi-hydrated phosphogypsum, 0.3% of gas former, 1.5% of polyester needled felt, 0.2% of naphthalene water reducing agent and the balance of fly ash.
The particle size of the recycled silicon mullite red brick material is 200 meshes.
In the recycled silicon mullite brick material, the weight ratio of alumina is not less than 30%.
In the concrete building block, the cement is 42.5 Portland cement.
The anti-freezing waterproof agent consists of glycol, styrene-acrylic emulsion and redispersible latex powder; the mass ratio of the ethylene glycol to the styrene-acrylic emulsion to the redispersible emulsion powder is 100: 8: 40.
the gas former is a-sodium alkenyl sulfonate.
The thickness of the polyester needle felt is 0.8 mm.
The preparation method of the concrete block with good waterproof and heat insulation effects comprises the following steps:
(1) adding raw materials except for the gas former of the concrete block into a stirrer, adding water and stirring to obtain slurry with certain consistency;
(2) heating the prepared slurry to 60 ℃, adding a gas former, and stirring at a high speed;
(3) rapidly pouring the uniformly stirred slurry into a mold, and putting the mold into a steam curing box at 65 ℃ for 60min for precuring after the slurry in the mold is fully aerated;
(4) cutting the blank after pre-curing;
(5) after the die is removed, the cut blank is sent to a still kettle for steam curing according to a specified steam curing system, and the steam curing conditions are as follows: at 170 ℃, 4MPa and 3 h;
(6) and (4) after the autoclave curing is finished, taking the masonry out of the kettle, and aging for 3d under natural conditions.
Example 3
A concrete block with good waterproof and heat insulation effects comprises the following components in percentage by weight: 18% of silicon mullite red brick recycled material, 28% of cement, 3% of anti-freezing and waterproofing agent, 18% of semi-hydrated phosphogypsum, 0.1% of gas former, 3.2% of polyester needled felt, 0.1% of naphthalene water reducing agent and the balance of fly ash.
The particle size of the recycled silicon mullite red brick material is 200 meshes.
In the recycled silicon mullite brick material, the weight ratio of alumina is not less than 30%.
In the concrete building block, the cement is 42.5 Portland cement.
The anti-freezing waterproof agent consists of glycol, styrene-acrylic emulsion and redispersible latex powder; the mass ratio of the ethylene glycol to the styrene-acrylic emulsion to the redispersible emulsion powder is 100: 12: 30.
the gas former is a-sodium alkenyl sulfonate.
The thickness of the polyester needle felt is 1.2 mm.
The preparation method of the concrete block with good waterproof and heat insulation effects comprises the following steps:
(1) adding raw materials except for the gas former of the concrete block into a stirrer, adding water and stirring to obtain slurry with certain consistency;
(2) heating the prepared slurry to 80 ℃, adding a gas former, and stirring at a high speed;
(3) rapidly pouring the uniformly stirred slurry into a mold, and putting the mold into a steam curing box at 60 ℃ for 90min for pre-curing after the slurry in the mold is fully aerated;
(4) cutting the blank after pre-curing;
(5) after the die is removed, the cut blank is sent to a still kettle for steam curing according to a specified steam curing system, and the steam curing conditions are as follows: at 150 ℃, 3MPa and 4 h;
(6) and (4) after the autoclave curing is finished, taking the masonry out of the kettle, and aging for 3d under natural conditions.
Comparative example 1
The styrene-acrylic emulsion in example 1 was removed, and the rest of the formulation and the preparation method were unchanged.
Comparative example 2
The polyester needle felt in example 1 was removed, and the rest of the compounding ratio and the preparation method were unchanged.
The concrete blocks prepared in examples 1 to 3 and comparative examples 1 to 2 were tested as follows, and the specific results are shown in Table 1.
Table 1: test results of the concrete blocks prepared in examples 1 to 3 and comparative examples 1 to 2;
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | |
| Compressive strength MPa | 11.2 | 11.8 | 11.0 | 11.0 | 10.8 |
| Flexural strength MPa | 8.7 | 8.9 | 8.6 | 4.1 | 4.3 |
| Surface density kg/m3 | 837 | 839 | 834 | 837 | 839 |
| Water absorption% | 1.5 | 1.5 | 1.7 | 6.5 | 3.7 |
| Thermal conductivity W/mK | 0.037 | 0.034 | 0.038 | 0.047 | 0.087 |
From the above test data, it can be known that the concrete block of the present invention has very good waterproof effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The concrete block with good waterproof and heat insulation effects is characterized by comprising the following components: the composite material comprises a silicon mullite red brick reclaimed material, cement, an anti-freezing waterproof agent, semi-hydrated phosphogypsum, a gas former, a polyester needled felt, a naphthalene water reducer and fly ash.
2. The concrete block with good waterproof and heat insulation effects as claimed in claim 1, which is characterized by comprising the following components in percentage by weight: 18-25% of silicon mullite red brick reclaimed material, 20-28% of cement, 3-5% of anti-freezing and waterproofing agent, 12-18% of semi-hydrated phosphogypsum, 0.1-0.3% of gas former, 1.5-3.2% of polyester needled felt, 0.1-0.2% of naphthalene water reducer and the balance of fly ash.
3. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the particle size of the recycled silicon mullite brick material is 200 meshes.
4. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the weight ratio of alumina in the recycled siliceous mullite brick material is not less than 30%.
5. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the cement in the concrete block is 42.5 portland cement.
6. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the antifreezing and waterproof agent consists of ethylene glycol, styrene-acrylic emulsion and redispersible latex powder.
7. The concrete block with good waterproof and heat insulation effects as claimed in claim 6, wherein in the antifreezing and waterproofing agent, the mass ratio of the ethylene glycol, the styrene-acrylic emulsion and the redispersible latex powder is 100: (8-12): (30-40).
8. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the gas generating agent is sodium a-alkenyl sulfonate.
9. The concrete block with good waterproof and heat insulation effects as claimed in claim 1 or 2, wherein the thickness of the polyester needle felt is 0.8-1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525331.9A CN112374839A (en) | 2020-12-22 | 2020-12-22 | Concrete block with good waterproof and heat insulation effects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525331.9A CN112374839A (en) | 2020-12-22 | 2020-12-22 | Concrete block with good waterproof and heat insulation effects |
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| Publication Number | Publication Date |
|---|---|
| CN112374839A true CN112374839A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011525331.9A Pending CN112374839A (en) | 2020-12-22 | 2020-12-22 | Concrete block with good waterproof and heat insulation effects |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116382A (en) * | 2016-06-21 | 2016-11-16 | 山东宏艺科技股份有限公司 | A kind of inorganic leak-stopping material |
| CN107556043A (en) * | 2017-09-04 | 2018-01-09 | 谭永超 | A kind of building block with strong insulative effectiveness and preparation method thereof |
| CN111018442A (en) * | 2019-12-25 | 2020-04-17 | 河北晨阳工贸集团有限公司 | Odorless anti-formaldehyde jade powder waterproof slurry and preparation method thereof |
| CN111807803A (en) * | 2020-07-15 | 2020-10-23 | 湖州巨旺墙体材料有限公司 | High-strength steel slag powder concrete block with waterproof effect |
-
2020
- 2020-12-22 CN CN202011525331.9A patent/CN112374839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116382A (en) * | 2016-06-21 | 2016-11-16 | 山东宏艺科技股份有限公司 | A kind of inorganic leak-stopping material |
| CN107556043A (en) * | 2017-09-04 | 2018-01-09 | 谭永超 | A kind of building block with strong insulative effectiveness and preparation method thereof |
| CN111018442A (en) * | 2019-12-25 | 2020-04-17 | 河北晨阳工贸集团有限公司 | Odorless anti-formaldehyde jade powder waterproof slurry and preparation method thereof |
| CN111807803A (en) * | 2020-07-15 | 2020-10-23 | 湖州巨旺墙体材料有限公司 | High-strength steel slag powder concrete block with waterproof effect |
Non-Patent Citations (1)
| Title |
|---|
| 沈春林等: "《预拌砂浆的生产与施工》", 31 August 2015, 中国建材工业出版社 * |
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Application publication date: 20210219 |